Note 3 - Business Segment Information (Details) - Inter-segment Revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Lighting Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Inter-segment net sales	$ 925	$ 855	$ 1,823	$ 1,512
Graphics Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Inter-segment net sales	195	449	400	1,286
Electronics Components Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Inter-segment net sales	9,450	7,283	17,954	13,619
All Other Category [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Inter-segment net sales	$ 2,037	$ 1,388	$ 4,192	$ 2,254